Haylou Sound

After the update when turning on ANC mode you can hear weird sound/noise on the headphone itself, i don't know if its the drivers but it is really annoying when you are using headphone (S40) it ruins the listening experience because of that already tried to restore default it but its still the same please fix it and need a firmware update on the app and Haylou S40

Aight gonna be honest about the app, the app works fine and i like about this app is there's a bunch of save presets for you to use, the s40 connected successfully and immediately connected to the app. One thing i noticed and hate is when i used the EQ customization, i changed the EQ and saved it. It works well, but the moment i clicked my ANC ON either the app or the headphones, the EQ seemed to reset and put back to normal EQ. I like how the s40 sounds but please fix it

one of the worst app I have used so far. I didn't manage to connect n55 to 2 different android phones using this app. the only thing I needed is to enable multipoint. iOS app helped.